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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 114 days






2. Male on one pin and female on other side






3. 19-23 (21) days






4. What makes the milk flow through the mammary glands?






5. 26 hours after estrus begins






6. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






7. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






8. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






9. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






10. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






11. Not under a timeline - cow can not be sold as steak






12. Milk is 15% ________ and 85% __________.






13. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






14. FEED






15. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






16. 147 days






17. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






18. 30 hours after estrus begins






19. 16-20 hours






20. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






21. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






23. (male) pushes the testes outward toward the legs for a cool-down off of the body






24. What about the sperm for a bull which has been castrated but still has testicles?






25. Why does estrus happen before ovulation?






26. 26 hours after estrus begins






27. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






28. 14-19 (17) days






29. (male) pushes the testes upward toward the body for warmth or protection






30. 147 days






31. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






32. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






33. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






35. Days which have decreasing daylight hours

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36. Scar tissue plugs up chambers of udder






37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






38. Help to signal hormone levels which we need both in the brain right next to each other.






39. 2 month growth cycle. stored in the epididymis of the bull






40. 19-23 (21) days






41. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






42. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






43. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






44. Male on one pin and female on other side






45. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






46. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






47. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






48. When are steers and heifers weaned from bottle feeding?






49. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






50. ~305 days (altough often longer due to breeding difficulties)